How is my horse betting system?

Query by : How is my horse betting technique? Okay, Im not severe about it, just fooling about with a spreadsheet and some older Preakness and Derby results. Basiclly what I did was make a spread sheet that has you sort in the win odds for every horse and then that tells how a lot of a bet I want to make on that horse to make a goal I set formyself. Say I want to leave the races with 5000 In my pocket. I just locate the quantity I require to bet on every single horse to have in the case of that horse winning me collect my $ 5000 purpose. So for a horse thats ten-1 I would have to bet $ 500 to make my objective of 5000 (In fact that would give me 5500 but I'm still attempting to figure out how to issue that into the excel sheet) Anyway, what I have figured out is that I just knock out the top rated 1 or 2 favored horses and that decreses the total investment I place in to be underneath my purpose of 5000. I know that if individuals top 2 favored horeses win I am screwed, I am not saying its a ideal system. Essentially, bet on every single horse except for the leading 2 favorites, and bet in scale so that every horse provides an equal payoff that will be over the complete sum invested. For instance, I ran this with the 2011 kentucky derby and I made a profit of 11% on a 70% chance of victory. (I reversed the odds to see what the % possibility a horse would win the race would be and then factored that in to uncover the chance that 1 of the horses I did not bet on would win)